[PATCH] D96405: [DAGCombiner] Reduce Shuffle_Vector Nodes Count

[Michael Marjieh via Phabricator via llvm-commits]

mmarjieh added a subscriber: RKSimon.
mmarjieh added a comment.

@RKSimon @craig.topper After investigating and trying out this combine in different DAG combine phases, I noticed that this optimization is not always beneficial for all targets.
Since this combine is beneficial in our target, I already implemented it in the target specific ISelLowering.
If we want to continue with this patch and commit it to the community, I suggest that we introduce a target hook for it.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D96405/new/

https://reviews.llvm.org/D96405